Question: Explain in details please In box 1 there are 5 red balls and 2 blue balls and in box 2 there are 2 blue balls

Explain in details please

In box 1 there are 5 red balls and 2 blue balls and in box 2 there are 2 blue balls and 3 red balls. If a ball is chosen at random, what is the probability that the ball is red? (Draw a tree diagram. Write out the formula and write answer in reduced fraction form)

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